Well yes, if you popped the cap off your favorite gallon jug of household bleach, took a couple of generous slugs, poured a half of a cup or so in your eyes (letting the rest run down into your still thristy mouth), dumped a quart or so into your ten-gallon aquarium, and poured the rest over your Caladiums, then I suppose all the warnings would be true.

I think what Katadyn is warning about is using the product contrary to directions. I have the tablets and have used them in practice, and I have yet to notice any detrimental effects.

If I were dying of thirst and fell down at the nearest ranch watering hole, slurping up as much water as I could, then walked home and chewed a handful or three of Micropur tabs (thinking that might make up for my drinking dung water), I might have a problem.